| Re: [eclipselink-users] Are there any sample apps... |
|
Doug, Well I suppose I like to keep things simple, or rather get the system to do as much of the work for me as possible, and then glue together that with a little business logic to build an application. My current applications are thick client JPA applications. I was originally put off JPA by the need to have separate XML and java code, but now annotations have got rid of mode of the duplication (and risk that I update something in one place and not the other). But then I saw the annotations and so I started to work first with OpenJPA. While building my prototype application I found that I was for ever writing code that took some entity beans that I had updated on the client, copying them back to the server, and updating them on the server using JPA on the server. So I tried writing some common code, and came up with something that was rather like the Remote Session. It actually did not do all of the RemoteSession (the queries were still done by the EJB so enforce access controls) but it did the object cache and persistence bits (and I did provide a place where all the objects being written/updated/deleted could be checked by the EJB to enforce access controls). The advantage of doing it this way was that I only had one access model, its was always the JPA cache API which keeps it simple for me. Although there were a few wrinkles left to flatten it basically works. Then you announced EclipseLink 1.0 and I knew that Eclipselink was going to be the basis for JPA 2.0, so I thought I should have a look around in the docs to see how easily I could migrate from OpenJPA to Eclipselink and I came across the RemoteSession and I thought - I recognise this, its a properly implemented version of what I have been reinventing. Hence my interest. In short I want to maintain the JPA cache approach everywhere as it fits in nicely with my existing code and is well defined and simple, while retaining access control over the client code at the server. I hope that explains at least some of my thinking, but I am more than happy to expand on any points. David On Tuesday 15 July 2008, DOUGLAS.CLARKE@xxxxxxxxxx wrote: > David, > > We do not illustrate the use of the remote session very much as it is a > very fringe piece of functionality. I would like to better understand where > it is being used effectively or where developers feel it will solve a > problem. > > As a project we need to either invest more in improving the usability of > this functionality (examples and functional enhancements) or eventually > deprecate it and remove it from the project. > > Can you provide more information on the challenge you are trying to address > with remote sessions? > > Doug > > -----Original Message----- > From: David Goodenough [mailto:david.goodenough@xxxxxxxxxxxxxxxx] > Sent: Monday, July 14, 2008 4:31 PM > To: eclipselink-users@xxxxxxxxxxx > Subject: [eclipselink-users] Are there any sample apps... > > > using the Remote Session facility. I am looking for source code and > any setup info. > > David > _______________________________________________ > eclipselink-users mailing list > eclipselink-users@xxxxxxxxxxx > https://dev.eclipse.org/mailman/listinfo/eclipselink-users > _______________________________________________ > eclipselink-users mailing list > eclipselink-users@xxxxxxxxxxx > https://dev.eclipse.org/mailman/listinfo/eclipselink-users |